Tomlin said on Monday that both Bell and Blount will be punished. Tomlin did not rule out the possibility of suspending them for the regular-season opener.

"Everything's on the table," Tomlin said, according to ESPN.com.

Besides the arrest on marijuana possession, Bell was also charged with driving under the influence.

"There are parts of this that are going to have to go through the legal process and the league review process," team president Art Rooney II told ESPN.com. "We'll just have to deal with it as that process unfolds."

Bell and Blount both played a lot in the Steelers' 31-21 preseason loss to the Philadelphia Eagles on Thursday night. Blount had seven carries for 32 yards in the game, and Bell had nine carries for 23 yards.

Last season, Blount rushed for 772 yards for New England, and Bell ran for 860 yards for Pittsburgh.

The Steelers drafted Bell in the second round of the 2013 draft. Blount signed with the Steelers during the offseason.